rotary connection

Abstract

The utility model discloses a rotary connecting piece, its technical scheme main points are including left plate and right plate, and the other end of left plate and right plate both has a connecting block articulated, two sliding slots, both respectively set up in left plate and right plate, and the cross section of sliding slot is T, sliding block, its cooperation slip in the sliding slot of right plate, the threaded hole is seted up in the sliding slot of left plate, and the vertical screw is inserted in sliding block, when left plate and right plate butt joint in same straight line, two sliding slots are communicated and set up simultaneously, and the straightening of left plate and right plate is realized to the sliding block slip in two sliding slots, and the screw is located the threaded hole just above, and the screw fastening is realized to the rotation of both, adopt the connecting block of both ends to be used for external fixedly later rotating, and the position switching of movable and fixed of middle left plate and right plate is realized through the movement of sliding block, like this guarantee that rotary connecting piece can rotate in the middle, also can be fixed in the middle, when its installation in dumbbell frame can realize the steady change of two kinds of state of folding and opening.

Description

Technical Field

[0001] This utility model relates to a connector, and more specifically, to a rotary connector. Background Technology

[0002] A dumbbell rack is a rack for holding dumbbells.

[0003] Reference Figure 1 The existing technology discloses a dumbbell rack, which includes two inclined frames on the left and right. The openings of the inclined frames are used to place dumbbells. The tops of the two inclined frames are connected by a pivot, which is used for folding and transporting semi-finished products. When the dumbbell rack is finally installed, a horizontal plate connector is welded between the two inclined frames. The horizontal plate connector ensures the overall stability of the dumbbell rack, and then it is sold as a finished dumbbell rack.

[0004] However, in the above technologies, when a gym changes locations, the dumbbell racks need to be transported. However, due to the welding of the horizontal plate, the dumbbell racks cannot be folded, and the dumbbell racks occupy a lot of space in the transport vehicle. Therefore, a new connector is needed to achieve a stable transition between the folded and open states of the dumbbell racks. Utility Model Content

[0005] The purpose of this utility model is to provide a rotating connector, which uses connecting blocks at both ends for external fixation and rotation, while the middle left and right plates switch between movable and fixed positions through the movement of sliders. This ensures that the rotating connector can rotate or be fixed in the middle, and when it is installed on a dumbbell rack, it can achieve a stable transition between folded and open states.

[0006] The above-mentioned technical objective of this utility model is achieved through the following technical solution: A rotary connector includes: a left plate and a right plate, the mating ends of the left and right plates are hinged together, and a connecting block is hinged to the other end of each of the left and right plates; two slide grooves are respectively formed on the left and right plates, and the cross-section of the slide grooves is T; a slider that slides in the slide groove of the right plate; a threaded hole is formed in the slide groove of the left plate, and a vertical screw is inserted into the slider; when the left and right plates are mated in a straight line, the two slide grooves are connected, and the slider slides in the two slide grooves to straighten the left and right plates, and the screw is located directly above the threaded hole, and the two are tightened to achieve threaded fastening.

[0007] Preferably, the slider has a receiving cavity, and the receiving cavity has a compressed spring; the screw is inserted into the receiving cavity, and the screw is fixed to a push block located in the receiving cavity; the spring abuts against the push block to provide a driving force for the screw to extend downward.

[0008] Preferably, the upper end of the threaded hole is a insertion hole, and the inner diameter of the insertion hole is larger than the outer diameter of the screw so that the screw can be positioned and inserted into the insertion hole first.

[0009] Preferably, a section of linear rail is fixed to the upper surface of the left plate and the right plate, and two grooves are formed on the corresponding linear rails.

[0010] Preferably, the docking positions of the two linear rails are hinged and offset from the docking ends of the left and right plates.

[0011] Preferably, a positioning hole is provided in the groove of the right plate; when the screw of the slider is inserted into the positioning hole, the slider is located entirely in the groove of the right plate.

[0012] In summary, this utility model has the following beneficial effects: The connecting blocks at both ends are used for external fixation and rotation, while the middle left and right plates switch between movable and fixed positions by moving sliders. This ensures that the rotating connector can rotate or be fixed in the middle, and when it is installed on the dumbbell rack, it can achieve a stable transition between folded and open states. Attached Figure Description

[0013] Figure 1 This is a schematic diagram of a dumbbell rack in the prior art; Figure 2 This is a schematic diagram of the rotating connector mechanism in the embodiment; Figure 3 yes Figure 2 Enlarged view of part E in the image; Figure 4 This is a schematic diagram showing the connection position of the slider and screw in the embodiment; Figure 5 yes Figure 4 Draw a sectional view from AA; Figure 6 This is a structural schematic diagram of the hinge joint position between the left and right plates in the embodiment; Figure 7 This is a schematic diagram showing the state of the slider in the embodiment with the positioning hole and screw hole in place; Figure 8 This is a schematic diagram of the rotating connector folded in the embodiment; Figure 9 This is a schematic diagram of the rotating connector installed on the dumbbell rack in the embodiment; Figure 10 yes Figure 9 Enlarged view of part B in the image.

[0014] In the picture: 01. Diagonal frame; 02. Horizontal plate; 03. Rotating shaft; 11. Left plate; 12. Right plate; 13. Connecting block; 14. Linear rail; 21. Hinge shaft No. 1; 22. Hinge shaft No. 2; 31. Slide rail; 32. Slider; 4. Screws; 51. Threaded hole; 52. Insertion hole; 6. Positioning holes; 71. Receiving cavity; 72. Spring; 73. Push block. Detailed Implementation

[0015] The following is in conjunction with the appendix Figure 2-10 The present invention will be described in further detail below.

[0016] Example 1, a rotating connector, referring to Figure 2 It includes a left plate 11 and a right plate 12, which are metal plates; a straight rail 14 is welded and fixed to the upper surface of the left plate 11 and the right plate 12, which can increase the structural strength of the plate itself.

[0017] The linear rail 14 is provided with a groove 31, so the two grooves 31 are respectively opened on the left plate 11 and the right plate 12. The cross-section of the groove 31 is T; the adjacent ends of the two grooves 31 are connected, and the opposite ends of the two grooves 31 are blocked.

[0018] The two slide grooves 31 of the left plate 11 and the right plate 12 have the same cross-sectional dimensions. Therefore, after the left plate 11 and the right plate 12 are connected, the two slide grooves 31 can be connected.

[0019] The left plate 11 and the right plate 12 are hinged at their joint ends, and the two plates are rotated together using a first hinge shaft 21. Therefore, the left plate 11 and the right plate 12 can be folded and stored around the first hinge shaft 21, or they can be joined together in a straight line.

[0020] A slider 32 slides within the groove 31 of the right plate 12. The slider 32 can move along the straight direction of the groove 31. However, since both the groove 31 and the slider 32 have T-shaped cross sections, the slider 32 is difficult to detach from the upper end of the groove 31.

[0021] The slider 32 is fitted with a vertical screw 4. The head of the screw 4 is located at the upper end of the slider 32, and the lower end of the screw 4 can extend out of the lower end of the slider 32.

[0022] Reference Figure 2 and Figure 3 A threaded hole 51 is provided in the groove 31 of the left plate 11, and the threaded hole 51 is matched with the screw 4.

[0023] When the left plate 11 and the right plate 12 are rotated around the first hinge axis 21 until they are aligned, the slide grooves 31 of the left plate 11 and the right plate 12 are connected. At this time, the user moves the slider 32 to the left slide groove 31, so that the slider 32 is simultaneously located in the slide grooves 31 on both sides. At this time, the screw 4 is located directly above the threaded hole 51. Tighten the screw 4 downwards so that the screw 4 is screwed into the threaded hole 51 for fixation, thereby fixing the slider 32. Since the slider 32 is blocked above the first hinge axis 21, it is difficult for the two left plates 11 and the right plate 12 to be rotated apart around the first hinge.

[0024] Furthermore, a connecting block 13 is hinged to the other end of both the left plate 11 and the right plate 12, and the hinge is connected by the second hinge shaft 22. The function of the connecting block 13 is to fix it to the external mechanism. The fixing method can be bolt fixing or welding fixing.

[0025] Working principle: In Figure 7 (a) When slider 32 is fully positioned on the right plate 12, the left plate 11 and right plate 12 can rotate around their docking position to achieve folding and alignment adjustments; and the folding state of the left plate 11 and right plate 12 is as follows: Figure 8 As shown.

[0026] exist Figure 7 (b) The slider 32 is located between the left plate 11 and the right plate 12, and when the slider 32 is fixed, the left plate 11 and the right plate 12 are aligned in a straight line and remain stable.

[0027] Obviously, referring to Figure 9 and Figure 10 When the rotating connector is installed on the dumbbell rack, the two connecting blocks 13 are welded to the corresponding inclined frame 01. The upper ends of the two inclined frames 01 are rotatably connected by the pivot 03, which ensures that one end of the left plate 11 and the right plate 12 can rotate. The docking ends of the left plate 11 and the right plate 12 are fixed and unlocked by the slider 32, so as to realize the stable adjustment of the folding and unfolding of the dumbbell rack.

[0028] Example 2, a rotary connector, differs from Example 1 in that, referring to... Figures 2-5 , The slider 32 has a receiving cavity 71, which is a cylindrical cavity; Screw 4 is inserted into receiving cavity 71, and screw 4 is fixed with push block 73 located in receiving cavity 71; push block 73 and cavity are clearance fit, so when screw 4 rotates, push block 73 can rotate smoothly in cavity.

[0029] A compressed spring 72 is provided inside the receiving cavity 71; one end of the spring 72 abuts against the inner top of the receiving cavity 71, and the other end of the spring 72 abuts against the push block 73, so the push block 73 is always subjected to a downward elastic force.

[0030] Furthermore, the upper end of the threaded hole 51 is the insertion hole 52, and the inner diameter of the insertion hole 52 is larger than the outer diameter of the screw 4, so that the screw 4 can be positioned and inserted into the insertion hole 52 first.

[0031] The purpose of the above settings is to ensure the safety of the rotating connector, because it is used for connecting dumbbell racks and the structural stability of the dumbbell rack needs to be guaranteed as much as possible; Under the thrust of spring 72, screw 4 can always be stably inserted into socket 52, and the positioning function of slider 32 can be maintained even if the user forgets to tighten screw 4. Secondly, when screw 4 is screwed into threaded hole 51, the thrust of spring 72 is always straight through threaded hole 51, which can reduce the occurrence of screw 4 loosening on its own. The spring 72 pushes the screw 4 to be pre-inserted into the socket 52, and the screw 4 is locked to prevent loosening. Both of these measures reduce the free sliding of the slider 32 and improve its stability when locked, thereby improving the stability of the dumbbell rack.

[0032] A positioning hole 6 is provided in the slide groove 31 of the right plate 12. When the screw 4 of the slider 32 is inserted into the positioning hole 6, the slider 32 cannot move in the slide groove 31 of the right plate 12, and the slider 32 is located entirely in the slide groove 31 of the right plate 12. The purpose of this design is to reduce the slider 32 from slipping off one end of the slide groove 31 when the left plate 11 and the right plate 12 are folded.

[0033] Working principle: When moving slider 32, the user needs to pull up the head of screw 4 to separate screw 4 from positioning hole 6, and then slide slider 32 into another groove 31; when screw 4 and insertion hole 52 are aligned, slider 32 is simultaneously located in two grooves 31, thereby restricting the rotation of left plate 11 and right plate 12, and the user rotates the screw 4 to insert into threaded hole 51.

[0034] Example 3, a rotary connector, differs from Example 1 or Example 2 in that, referring to... Figure 6 The two linear rails 14 are hinged and misaligned with the joint ends of the left plate 11 and the right plate 12. There is a gap in the middle of the joint position of the two linear rails 14, and the joint gap is located above the left plate 11.

[0035] The misalignment design ensures that the straight rail joint and the first hinge axis 21 are not on the same vertical plane, thus avoiding stress superposition caused by mutual pulling between the joint and the hinge when the left and right plates rotate around the hinge axis or are subjected to external forces. This reduces the risk of rail cracking and improves the overall structural strength of the connector.

[0036] The above description is merely a preferred embodiment of this utility model. The protection scope of this utility model is not limited to the above embodiments. All technical solutions falling within the scope of this utility model's concept are protected by this utility model. It should be noted that for those skilled in the art, any improvements and modifications made without departing from the principle of this utility model should also be considered within the protection scope of this utility model.

Claims

1. A rotary connector, characterized in that it comprises: The left plate (11) and the right plate (12) are hinged at their mating ends, and a connecting block (13) is hinged at the other end of both the left plate (11) and the right plate (12). Two grooves (31) are respectively opened on the left plate (11) and the right plate (12), and the cross-section of the groove (31) is T; The slider (32) slides in the groove (31) of the right plate (12); A threaded hole (51) is provided in the groove (31) of the left plate (11), and a vertical screw (4) is inserted into the slider (32); When the left plate (11) and the right plate (12) are aligned on the same straight line, the two slides (31) are connected. At the same time, the slider (32) slides in the two slides (31) to straighten the left plate (11) and the right plate (12). The screw (4) is located directly above the threaded hole (51). The two are tightened to achieve thread fastening.

2. The rotary connector according to claim 1, characterized in that: the slider... (32) is provided with a receiving cavity (71), and a compressed spring (72) is provided in the receiving cavity (71); The screw (4) is inserted into the receiving cavity (71), and the screw (4) is fixed with a push block (73) located in the receiving cavity (71); The spring (72) abuts against the push block (73) to provide a driving force for the screw (4) to extend downward.

3. The rotary connector according to claim 2, characterized in that: The upper end of the threaded hole (51) is the insertion hole (52). The inner diameter of the insertion hole (52) is larger than the outer diameter of the screw (4) so ​​that the screw (4) can be positioned and inserted into the insertion hole (52) first.

4. The rotary connector according to claim 1, characterized in that: The upper surfaces of the left plate (11) and the right plate (12) are each fixed with a section of straight rail (14), and two grooves (31) are opened on the corresponding straight rails (14).

5. The rotary connector according to claim 4, characterized in that: The docking positions of the two linear rails (14) are hinged and misaligned with the docking ends of the left plate (11) and the right plate (12).

6. The rotary connector according to claim 2, characterized in that: A positioning hole (6) is provided in the groove (31) of the right plate (12); When the screw (4) of the slider (32) and the positioning hole (6) are engaged, the slider (32) is located entirely in the groove (31) of the right plate (12).

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